Effects of feeding a fumonsin (FB₁) naturally contaminated corn at various levels, with and without 2 adsorbents on the growth performance, blood, and liver chemistry of nursery pigs
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Three studies were conducted to determine the effects of diets containing various concentrations of fumonisin FB1 supplied by naturally contaminated corn with and without 2 adsorbents on nursery pig performance. Use of naturally contaminated corn instead of fumonisin culture material more approximates what would occur under industry conditions. Three 21 d studies were conducted using 30 to 32 two wk old post-weaned individually penned barrows with an average initial weight of 6.54 kg that were randomly allotted to dietary treatments in each experiment. (6 replications) containing different concentrations of FB1. Exp. 1 treatments were a Phase 2 nursery diet supplemented with 1) 0 ppm FB1 (control), 2) 20 ppm FB1, 3) 30 ppm FB1, 4) 40 ppm FB1, and 5) 50 ppm FB1. In conclusion, results indicate feeding a diet up to 50 ppm FB1 did not adversely affect growth performance of nursery pigs fed for 21 d however, a liver sphinganine to sphingosine significant increase did occur. Exp. 2 dietary treatments using 0.5 % carbonized-clay adsorbent (CC) were 1) 0 ppm FB1 corn, 2) 0 ppm FB1 corn + CC, 3) 20 ppm FB1 4) 20 ppm FB1 + CC, 5) 50 ppm FB1, and 6) 50 FB1 + CC. In conclusion, the results of this study reveal that a carbonized-clay adsorbent did not improve nursery pig performance and did not prevent or reduce changes in SA: SO ratios caused by FB1. Exp 3. had dietary treatments 1) control (0 ppm FB1 corn), 2) 0 ppm FB1 + 0.5 % activated carbon (AC), 3) 50 ppm FB1, and 4) 50 ppm FB1 + 0.5 % AC. In conclusion, the clay-based activated carbon at 0.5% did not reduce the adverse affects of 50 ppm FB1 on performance, serum chemistry, and liver SA: SO ratio of nursery pigs fed diets for 21 days.